光纤光栅法布里-珀罗腔的V-I传输矩阵法研究

快速有效地获得多级联光纤光栅法布里-珀罗(F-P)腔的光谱特性,是优化设计基于上述结构建立的级联多波长激光器、放大器等各种光器件以及复杂分布式传感网络的重要基础和保障.将V-I传输矩阵法用于光纤光栅F-P腔反射光谱特性的分析,并建立了V-I传输矩阵模型.采用该模型对三种不同结构的光纤光栅F-P腔在不同参数下的光谱特性进行分析,并与传统多层膜法的分析结果相比较,表明V-I传输矩阵法能够在保证分析精度的前提下大大节省运算时间.实验结果表明,V-I传输矩阵法对光纤光栅F-P腔谱特性的分析结果比耦合模法更准确.

Fiber grating Fabry-Perot cavity studied by V-I transmission matrix method

Fast and efficient access to spectral characteristics of multi-cascaded fiber grating Fabry-Perot (F-P) cavity, is an important foundation and premise to ensure optimizing the design of cascade multi-wavelength lasers, amplifiers and other optical devices, and complex distributed sensing network based on the F-P structure. V-I transmission matrix method is presented first in this paper to analyze the reflection spectral characteristics of fiber grating F-P cavity and then the V-I transmission matrix model is established. Spectral characteristics of three different structures of fiber grating F-P cavity at different parameters are analyzed based on the V-I transmission matrix model. Compared with multi-layer method, V-I transmission matrix method can save the computation time apparently under the premise of ensuring analysis accuracy. The experimental results show that for analyzing the spectral characteristics of fiber grating F-P cavity, the V-I transmission matrix method is more accurate than the coupled-mode method.